2 files changed, 2 insertions, 2 deletions
diff --git a/src/libstd/ffi/c_str.rs b/src/libstd/ffi/c_str.rs
index 1586e0a4ddb..5f0b11a616e 100644
--- a/src/libstd/ffi/c_str.rs
+++ b/src/libstd/ffi/c_str.rs
@@ -585,7 +585,7 @@ impl From<Box<CStr>> for CString {
     }
 }
 
-#[stable(feature = "box_from_c_string", since = "1.18.0")]
+#[stable(feature = "box_from_c_string", since = "1.20.0")]
 impl From<CString> for Box<CStr> {
     #[inline]
     fn from(s: CString) -> Box<CStr> {
diff --git a/src/libstd/ffi/os_str.rs b/src/libstd/ffi/os_str.rs
index 3815f986681..3232a51546e 100644
--- a/src/libstd/ffi/os_str.rs
+++ b/src/libstd/ffi/os_str.rs
@@ -542,7 +542,7 @@ impl From<Box<OsStr>> for OsString {
     }
 }
 
-#[stable(feature = "box_from_os_string", since = "1.18.0")]
+#[stable(feature = "box_from_os_string", since = "1.20.0")]
 impl From<OsString> for Box<OsStr> {
     fn from(s: OsString) -> Box<OsStr> {
         s.into_boxed_os_str()